Schleicher (Germany) Wooden / Metal Structure Aircraft

Transcription

1 Contact: UK Agent: - Zulu Glasstek, Peter Wells Tel or A lot of spares like oversize pins and GL1 wood available at Current AD s available on LBA web site. and more recent ADs Schleicher ADs and TN s can be viewed at All Technical notes should be reviewed to determine applicability. Schleicher General M Elevator control Bent elevator control arms now extended to all types with plate alloy elevator arms and Inspection requirements clarified BGA 004/08/2000 issue Rhönlerche II ("Ka 4") (Brief descriptions translated from German text. See AD for full details) M Structure Structural inspection 5 year repeat due at next annual after 1 st Nov.2015 BGA 042/07/2004 issue Ka-6 series ( except K6E) (Brief descriptions translated from German text. See AD for full details) M Controls Elevator drive engagement check BGA 003/08/ /00 K6 In Service Reports (Advisory) Page 1

2 Wing ribs 1 & 2 inspect for cracks 03/82 & 10/80 Tail plane front mounting damaged by carrying handle - delete handle 06/83 Elevator drive rod damaged near elevator by misrigging 06/83 Tail plane rear mounting cracked & worn fittings, loose & corroded bolts 06/96, 04/94 & 06/91 Canopy catch insecure 06/94 Trim spring & lower mounting bracket corroded/cracked inspect 06/86 Airbrake paddles delaminated bolt and glue paddles to aluminium parts BGA Tail plane insecure reinforce/repair mounting as necessary 04/87 Air brakes Cracks in air brake aperture 02/00 Elevator trim Split pin and washer missing from control inside fuselage Seat Seat repositioned causing over travel of elevator and unusual spin behaviour K-7 M Rear stick comes out of mounting lock into place 04/83 M Canopy Strap fouls rear stick/brake lever. Fit secondary strap. M Controls Elevator drive engagement check BGA 003/08/ /00 K7 In Service Reports (Advisory) Fuselage centre section cracks in welds 06/85 Rear canopies detach in flight locating lugs removed or badly warn 02/87 & 08/91 Rudder cable may catch under rear airbrake pivot nut, fit guard if necessary 12/99 Air brake pivots Pivot bolts may migrate if not locked 02/00 Jammed open in flight Control stop jumped past stop tube 02/01 K-8 (Brief descriptions translated from German text. See AD for full details) M Elevator drive Inspection of engagement BGA 003/08/2000 Iss. 1 08/00 Page 2

3 K8 and K18 In Service Reports (Advisory) Wing ribs 1&2 inspect for cracks 10/80 Control system lower mounting in fuselage centre - cracked - inspect 03/82 Seat back to be fitted (K-8) to prevent parachute catching between tubes 11/82 Elevator hinge pins not secure - inspect 12/86 Rudder cables fouling elevator rod 02/92 Elevator hinge cracked 06/92 Tail plane mountings cracked and corroded 04/93 Fuselage tubes X-ray inspection is possible 04/97 Elevator push rod check for bending 04/96 & 04/97 Elevator control (K8) Operating bearing fitted to incorrect holes in operating arms Wings Balsa wood packing found inside wing ASK-13 series (including Jubi GmbH aircraft) M Rear stick comes out of mounting lock into place 04/83 M Canopy Strap fouls rear stick/brake lever. Fit secondary strap. M Elevator Inspection for bent elevator arms BGA 004/08/2000 Iss 1 08/00 R Controls inspection of aileron and air brake control support brackets BGA 008/10/2000 Iss 1 10/00 M Elevator drive Inspection of engagement BGA 010/12/2000 Iss 1 12/00 ASK 13 In Service Reports (Advisory) Canopy opened in flight improperly locked (lack of lubrication) - colour code open/shut 02/87 Wheel brake lug failure 10/75 Canopy jettison inoperative and hinge fractured - lack of lubrication 02/91 Weak link reduced to 850 Kg max winch/auto speed increased to 60 kts 12/93 Aileron balance weight supports corroded 02/94 Airbrake drive behind rear seat torque tube failure near drive lug weld 04/97 Page 3

4 Air brake pivots Pivot bolts may migrate if not locked 02/00 Rudder pedals Failure of tube at attachment to pedal 04/00 Ballast weights Unsecured ballast fouling controls due to bolt failure 04/00 Landing Gear Suspension Donuts displaced after heavy landing and restricting controls 08/02 Spin training In extended weight category, K13 s are approved for spin training whilst operating. Other aerobatics prohibited Air Brake Control Rear Air Brake lever broken at rod attachment bearing location , Aileron. Airbrake Cracked bracket at wing root (BGA Inspection 008/10/2000 refers) Battery Box Battery secured with cable ties due to broken support Nose Wheels Non Schleicher conversions susceptible to damage from hard landings Seat Harness Incorrect bolt fitted to harness anchor point Rudder pedals Ensure fwd rudder cables are correct length to avoid pedals fouling nose cone Lower sternpost Rotten wood at lower sternpost and extremely corroded bolts ASK-14 also see general and airbrake sections M Controls Elevator tube spar inspection AD 70-86, TN 3 M Controls Cable inspections Nicropress sleeves AD M Fuel system Fuel tank AD , TN 6 10/89 M Controls L Hotellier connectors AD /3 R Structure Structural inspection due at next annual after 1 st Nov 2015 BGA 042/07/2004 issue 5 ASK 16 R Structure Structural inspection due at next annual after 1 st Nov 2015 BGA 042/07/2004 issue 5 ASK 16 In Service Reports (Advisory) Control tubes in the wing corroded 02/92 ASK 18 M Controls Elevator drive engagement check BGA 010/12/ /00 Page 4

5 M Rudder control Inspection & modification of rudder cable guide tube BGA 026/03/2002 Issue 1 K8 and K18 In Service Reports (Advisory) Wing ribs 1&2 inspect for cracks 10/80 Control system lower mounting in fuselage centre - cracked - inspect 03/82 Seat back to be fitted (K-8) to prevent parachute catching between tubes 11/82 Elevator hinge pins not secure - inspect 12/86 Rudder cables fouling elevator rod 02/92 Elevator hinge cracked 06/92 Tail plane mountings cracked and corroded 04/93 Fuselage tubes X-ray inspection is possible 04/97 Elevator push rod check for bending 04/96 & 04/97 Elevator control (K8) Operating bearing fitted to incorrect holes in operating arms Structures Delamination of spar ply found during 5 year inspection Schleicher Wood / Metal general - In Service Reports (Advisory) Flying controls Aileron horn and balance weight support are corroded 04/05 Wheel brake cables to be wire wiped at turnbuckle to prevent air brake restriction 10/66 Wings, damage by water/damp ply separation & spar damage 02/00, 10/83, 08/83 & 08/76 Rudder pedals (front) cracked and bent - clips broken 08/94, 06/84 & 02/77 Rudder hinges (top & bottom) cracked 04/87, 02/84, 04/80 & 01/79 Rudder mounting brackets cracked 04/91 & 02/90 Lower rudder hinge mount cracked repair and reinforce with 2 mm ply as necessary 06/97 Elevator drive (not Ka-6E & 14) check full engagement after repair 06/87 Rigging of ailerons both neutral with elevator neutral 08/87 Fin attachments (rear) damage by water and corroded 08/98, 06/95, 01/93 & 02/90 Steel tubes around wheel boxes rusted through - lack of drainage 04/90 Trim tab root rib glued joint failure tab detached - introduce drain holes 08/90 Page 5

6 Rear fuselages (ASK 13 & K 7) structural failures 02/91 Control connectors at wing root bending of thread - adjust correctly/fit airbrake system stop half connector top may be cut away to give clearance with bellcrank 02/91 Trim system turnbuckles failure at trim lever 08/91 Fin attachments ply cracked (front) & rotten at bottom 08/87 & 06/92 Canopy locks worn Ka 2/2b (& Ka 7?) canopies open during sideslips 08/97 Tail plane mounting bolt threads wear - replace bolts as necessary 06/99 Rudder Pedal Failure Ka13 Reported failure. 04/00 Unsecured ballast weight Attachment bolt failed 04/00 Bogus parts Problems with bogus parts 04/00 Fuselage fittings K7 low wing conversion found with excessive material removed from wing attachment lugs 4/2006 Control connections K13 (applicable to other types) Aileron disconnect safety/locking pin bent and missed rigging pin hole Replace safety pins if bent or distorted 4/2006 Elevator control (K8) Operating bearing fitted to incorrect holes in operating arms. Could also affect other similar types Structure Delaminated stern post after hard ground strike Rudder pedals Saddle clamps broken causing pedals to jam on fuselage frame Wheels Broken tie bolts. Take care when removing wheels, deflate if necessary Airbrake stops insecure rivet them into place 07/76 Cross-link in centre section (not ASK-13) cracked and twisted - reinforce 04/89, 12/88 & 12/84 Airbrake handle failures cracks at rivet and bearing holes 10/95, 04/94, 06/92 & 10/88 Airbrake paddles (lower) delamination, lack of drain holes 04/93 & 04/89 Airbrakes (Ka-2B & K-7) reduction of travel and loads 02/85 & 08/89 recommended airbrake travel K-7, restriction to prevent heavy landings Paddles should not quite clear cut-outs in wings. 08/99 Jammed open in flight Operating arm attach. Bolt to paddle fouling wing box. Incorrectly positioned slot 02/01 ASK 13 Airbrakes Continuing problems with cracked A brackets at wing root see pervious 08/03 Controls (K6cr and poss others) Aileron disconnect due QR safety clip fouling ctr. Section shelf. Ensure only correct size clip is used 10/03 Controls (K13 and others) damage to control rods in ctr. Section due to rigging damage. Check for bent rods and fittings. 10/03 Fin attachment It is recommended to pack lower face of fin against fuselage tubes to prevent flexing 04/04 Page 6